Finding outliers two standard deviations above mean machine learning notes silicon vanity uniqtech. There many ways to find outliers. Sometimes domain knowledge is important. One way is to consider any number two standard deviation above or two standard deviation below the mean as outliers.

It's by no means the most robust, but in practice, it may prove to be handy and easy to implement.

Ever tried to put your code on Github? May be it is for a portfolio, may be it is for a conference. Either way, you can host your website for free on Github! No backend required. The drawback is that there's no database persistence, but the wonderful part is that it's free and fast. It is quite useful! Watch our 5 minute hosting a website on Github Youtube tutorial below.

Tuesday, January 23, 2018

Softmax function is one of the most important output function used in Deep Learning, a hot popular branch of machine learning. Softmax turn a vector of numbers, called logits, into a probabilities that sum to one : 0.7+0.2+0.1 = 1. See the above image from Udacity's deep learning nanodegree. The formula takes each individual y value and take the special number e to the exponent of this y_i, also divide it by the sum of all e to the y_i exponents hence it sums to one!

First of all we have a vector of y_i, outputs of connected layers of neurons aka weights and features - dot product.

Sunday, January 14, 2018

Udacity Digital Marketing Nanodegree offers real world marketing practice. You get a real budget and play with real world professional tools like MailChimp, Hubspot, Google AdWords, Facebook Ad, ... There's no guarantee for jobs but that's a solid starting point for practicing and getting your hands dirty with all the marketing tools. What I like is that at the end of course, you will get a full portfolio to show. I was able to get to weekly top list and ultimately get to 150000 impressions. That's a solid experience despite the tiny real world budget! And I got some experience managing Udacity's account get a preview of the one million dollar account.